EP2030815A1 - Radachsaufhängung mit Kunststofffederarm - Google Patents

Radachsaufhängung mit Kunststofffederarm Download PDF

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Publication number
EP2030815A1
EP2030815A1 EP08163393A EP08163393A EP2030815A1 EP 2030815 A1 EP2030815 A1 EP 2030815A1 EP 08163393 A EP08163393 A EP 08163393A EP 08163393 A EP08163393 A EP 08163393A EP 2030815 A1 EP2030815 A1 EP 2030815A1
Authority
EP
European Patent Office
Prior art keywords
axle body
spring arm
spring
axle
sleeve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08163393A
Other languages
English (en)
French (fr)
Inventor
Hans Bramer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Weweler NV
Weweler Nederland BV
Original Assignee
Weweler NV
Weweler Nederland BV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Weweler NV, Weweler Nederland BV filed Critical Weweler NV
Publication of EP2030815A1 publication Critical patent/EP2030815A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G21/00—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces
    • B60G21/02—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected
    • B60G21/04—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically
    • B60G21/05—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically between wheels on the same axle but on different sides of the vehicle, i.e. the left and right wheel suspensions being interconnected
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
    • B60G11/32—Resilient suspensions characterised by arrangement, location or kind of springs having springs of different kinds
    • B60G11/34—Resilient suspensions characterised by arrangement, location or kind of springs having springs of different kinds including leaf springs
    • B60G11/46—Resilient suspensions characterised by arrangement, location or kind of springs having springs of different kinds including leaf springs and also fluid springs
    • B60G11/465—Resilient suspensions characterised by arrangement, location or kind of springs having springs of different kinds including leaf springs and also fluid springs with a flexible wall
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G7/00—Pivoted suspension arms; Accessories thereof
    • B60G7/001—Suspension arms, e.g. constructional features
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G9/00—Resilient suspensions of a rigid axle or axle housing for two or more wheels
    • B60G9/003—Resilient suspensions of a rigid axle or axle housing for two or more wheels the axle being rigidly connected to a trailing guiding device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2200/00—Indexing codes relating to suspension types
    • B60G2200/20—Semi-rigid axle suspensions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2200/00—Indexing codes relating to suspension types
    • B60G2200/30—Rigid axle suspensions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2200/00—Indexing codes relating to suspension types
    • B60G2200/30—Rigid axle suspensions
    • B60G2200/31—Rigid axle suspensions with two trailing arms rigidly connected to the axle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2200/00—Indexing codes relating to suspension types
    • B60G2200/30—Rigid axle suspensions
    • B60G2200/34—Stabilising mechanisms, e.g. for lateral stability
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/10—Type of spring
    • B60G2202/11—Leaf spring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/10—Type of spring
    • B60G2202/13—Torsion spring
    • B60G2202/136—Twist-beam type arrangement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/10—Mounting of suspension elements
    • B60G2204/12—Mounting of springs or dampers
    • B60G2204/121—Mounting of leaf springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/10—Mounting of suspension elements
    • B60G2204/14—Mounting of suspension arms
    • B60G2204/143—Mounting of suspension arms on the vehicle body or chassis
    • B60G2204/1434—Mounting of suspension arms on the vehicle body or chassis in twist-beam axles arrangement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
    • B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
    • B60G2206/20—Constructional features of semi-rigid axles, e.g. twist beam type axles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
    • B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
    • B60G2206/30—Constructional features of rigid axles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
    • B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
    • B60G2206/40—Constructional features of dampers and/or springs
    • B60G2206/42—Springs
    • B60G2206/428—Leaf springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
    • B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
    • B60G2206/70—Materials used in suspensions
    • B60G2206/71—Light weight materials
    • B60G2206/7101—Fiber-reinforced plastics [FRP]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2300/00—Indexing codes relating to the type of vehicle
    • B60G2300/04—Trailers
    • B60G2300/042—Semi-trailers

Definitions

  • the invention relates to a wheel axle suspension for a vehicle, in particular a lorry or a trailer.
  • a wheel axle suspension comprises an axle body and a pair of suspension brackets, also known as spring carrier arms, fitted on the vehicle chassis on either side of the vehicle, to which suspension brackets a longitudinal bearing arm is hingedly connected in each case.
  • Such longitudinal bearing arms are referred to in the art as “trailing arms”.
  • the wheel axle suspension comprises on either side an air spring which is active between the axle body and the vehicle chassis and is usually connected to the trailing arm.
  • wheel axle suspensions are known.
  • the trailing arm is in the form of a spring arm.
  • the spring action of the trailing arm produces resistance to the rolling movement about the longitudinal axis of the vehicle.
  • trailing arms are usually made of steel by rolling.
  • the wheel axle is then clamped against the trailing arm by means of clamping means.
  • An example of such a wheel axle suspension is disclosed in EP 1 273 464 .
  • EP 1 308 265 discloses a spring-mounted trailing arm made of plastic in a comparable form to that of the steel spring arm of EP 1 273 464 , in which the axle body is clamped against the trailing arm.
  • This known trailing arm is composed of a number of parallel layers of fibre-reinforced plastic.
  • EP 1 486 359 discloses a composite trailing arm which is manufactured from tapes of fibre material with plastic resin therein.
  • an opening for an axle body is left open.
  • the axle body is afterwards passed through the opening and fixed with an adhesive.
  • the openings in the axle body can have a non-circular shape, e.g. an oval shape, so as to prevent rotation of the axle body with respect to the trailing arm.
  • WO 2006/119101 in particular Figs 13 to 15 of that publication, discloses a wheel axle suspension with spring arms made of plastic which are hingedly connected to suspension brackets, in which the axle body is not clamped against the spring arms, but is surrounded by a sleeve moulded integrally with the rear end of each of the spring arms.
  • the spring arm has a constant sectional profile in a longitudinal section.
  • the plastic trailing arm shown is manufactured by pultrusion.
  • the axle body is inserted through the sleeve after manufacturing of the trailing arm and is secured to the sleeve by means of a wringing fit, adhesive bond and/or by means of bolts to the sleeve.
  • the invention has for an object is to propose an alternative method to provide a trailing arm for a wheel axle suspension.
  • a spring arm of fibre reinforced plastic with an integral axle body is manufactured.
  • the spring arm is therein constituted essentially from fibre material layers and a plastic resin, wherein the spring arm on a front side is provided with one or more cylindrical members adapted to receive a hinge pin in a mounted state under a vehicle chassis so as to hingedly connect the spring arm with the vehicle chassis.
  • the axle body extends on a rear side of the spring arm. A plurality of fibre material layers are put around a portion of the length of the axle body at that rear side after which the plastic resin cures whereby a sleeve is formed around the axle body which is connected integrally with the axle body.
  • the (metal) axle body is wrapped in fibre material, e.g. fibre mats, after which the plastic resin can cure and the axle body is integrally connected to the trailing arm.
  • the sleeve is formed around a central portion of the axle body, wherein with particular preference the sleeve is formed over at least half of the length of the axle body.
  • the axle body is enclosed over a sufficient length by this measure and is thus fixed to a sufficiently large surface of the sleeve to resist rotation of the axle body with respect to the sleeve.
  • the embedding over a sufficiently great length in the centre of the vehicle causes torsional forces to be prevented, which torsional forces occur when one applies two separate trailing arms that are arranged on either side of the vehicle and that are both connected to the axle body.
  • a mould is used for forming the spring arm in manufacturing the trailing arm.
  • the axle body is positioned in the mould after which mats of fibre material and resin are laid in the mould and can be laid around the axle body.
  • the entire structure is heated after which the resin cures and the trailing arm obtains its final shape and forms an integral unit with the axle body.
  • the one or more cylindrical members are integrally formed with the spring arm by putting fibre material layers around a pin shaped member after which the plastic resin cures and the one or more cylindrical members are formed.
  • the pin shaped member can be laid in the mould to form the cylindrical members is removed afterwards.
  • two cylindrical members are formed on the front side of the spring arm, wherein the pin shaped members are removed after the spring arm is formed.
  • a front edge s formed on the spring arm, which front edge extends between the two cylindrical members, wherein fibre material layers, seen in a longitudinal section, are put as a loop around the edge such that a rounded edge is formed.
  • the front edge of the spring arm is made curve-shaped. Thereby, material can be saved, while still a sufficient roll resistance and resistance against transverse forces is provided.
  • the axle body with a locking protrusion on its periphery, which locking protrusion is embedded in the fibre-reinforced plastic of the sleeve of the spring arm during fabrication of the spring arm, for obtaining additional locking of the axle body against rotation with respect to the trailing arm.
  • the locking protrusion extends in the direction of the fibre layers of the fibre-reinforced plastic.
  • a plastic air spring mounting part and/or a shock absorber mounting part is integrally formed on the plastic spring arm.
  • a plastic support part for an axle lift is integrally formed on the front side of the spring arm, where in use an actuator of an axle lift can be supported.
  • an air spring mounting part and/or a shock absorber mounting part is provided on the axle body before the fibre material layers are put around the axle body, which air spring mounting part and/or shock absorber mounting part extends through the sleeve after forming of the sleeve.
  • the invention furthermore relates to a wheel axle suspension according to claim 14.
  • the longitudinal trailing arm of the wheel axle suspension according to the invention has a spring body that absorbs the transverse forces in horizontal direction that are exerted on the wheel axle.
  • the spring body of the longitudinal trailing arm according to the invention has such a stiffness that resistance is produced to the rolling movement of the vehicle about the longitudinal axis. Furthermore, the axle body is subjected to considerably lower torsional forces than is the case with the known suspension constructions, because the axle body according to the invention is embedded over the greater part of the length in the plastic of the sleeve.
  • the front end of the spring arm is preferably provided with one or more integrally moulded-on cylindrical members in which at least one hinge pin is accommodated, which hinge pin is fixed on the suspension brackets.
  • the spring carrier brackets each comprise two side plates situated at a distance from each other and extending substantially in the longitudinal direction of the vehicle, which side plates are provided with fixing holes for a hinge pin to be run through, and the front end of the spring arm is provided with two cylindrical members, which each fit between the side plates of the corresponding spring carrier bracket, a hinge pin being run through each of the cylindrical members and the fixing holes in the side plates of the corresponding spring carrier bracket.
  • vehicle undercarriages are produced in large numbers and the spring carrier brackets are fixed on them in the same place.
  • these spring carrier brackets have two side plates between which a spring eye is placed.
  • the preferred embodiment mentioned here has the advantage that the plate-type plastic spring arm can be fixed on a chassis that is also suitable for wheel axle suspensions with two parallel spring arms.
  • an opening is provided between the cylindrical members in the plate, which opening is preferably bounded by an arcuate edge extending between the cylindrical members.
  • the spring carrier brackets each comprise a single plate extending substantially in the longitudinal direction of the vehicle, which plate is provided with a fixing hole for running through a hinge pin.
  • the front end of the spring arm is furthermore provided with a cylindrical member extending between the spring carrier arms, through which cylindrical member a single hinge pin extends, the free ends of the hinge pin each being run through the fixing hole in the plate of the corresponding spring carrier bracket.
  • the hinge pin is connected to the plastic of the one or more cylindrical members, and a bearing bush through which the corresponding end of the hinge pin is run is provided on the spring carrier brackets.
  • the hole in the plate of the spring carrier bracket is preferably a slotted hole that is open towards an edge of the spring carrier bracket plate. This makes it possible to fit the spring arm with the single through-running hinge pin on the spring carrier brackets already fixed on the chassis.
  • Figs 1 a and 1 b illustrate a first preferred embodiment of a wheel axle suspension according to the invention.
  • a chassis beam 1 of a vehicle is visible in a side view, to which chassis beam a spring carrier bracket 2 is fixed.
  • the spring carrier bracket 2 can be connected to the chassis beam 1, for example by means of welding, by means of a bolted connection, or by means of another suitable connecting method.
  • the wheel axle suspension according to this embodiment has a spring trailing arm 3, which is in the form of a spring body 3c extending over the greater part of the width of the vehicle.
  • the spring trailing arm 3 is made of a fibre-reinforced plastic.
  • the trailing arm is manufactured from, e.g.
  • the trailing arm 3 that is shown in the figure has a constant thickness in the transverse direction of the vehicle and a varying thickness in the longitudinal direction of the vehicle. However, it is also possible to give the trailing arm a varying thickness in the transverse direction. There may be provided stiffening ribs in the spring arm by providing locally more fibre material.
  • the plastic is wrapped around a through-running hinge pin 4, so that a cylindrical member 3a through which the hinge pin 4 extends is formed.
  • the plastic and the hinge pin 4 are immovably fixed to each other.
  • the hinge pin 4 has on either side free ends 4a, which are each hingedly connected to a spring carrier bracket 2.
  • fibre material layers are wrapped around an axle body 5, in this case a hollow axle body with a circular cross section. Wrapping the fibre mats around the axle body 5 provides a fibre-reinforced plastic sleeve around the axle body 5 on the rear end of the trailing arm 3 after curing of the accompanying resin, which sleeve surrounds the axle body 5 over the greater part of the axle length.
  • wheels 6 are fitted on the ends 5a of the axle body 5 that are free of plastic, which wheels may be provided with a braking device 7.
  • the plastic of the sleeve 3b is immovably connected to the axle body 5, so that any undesirable rotation of the axle body 5 relative to the sleeve 3b, as a result of, for example, braking moments exerted upon the axle, is prevented.
  • the external surface of the axle body 5 can be roughened before the plastic is wound around it.
  • the locking projection preferably extends in the direction of the fibre layers of the spring plate 3, so that there is sufficient sturdiness to prevent the rotational forces upon the axle.
  • a spring carrier bracket 2 comprising a plate 21 is used, as can best be seen in Fig. 5a and Fig. 5b .
  • the spring carrier bracket plate 21 is laid against the chassis beam 1 (see Fig. 5b ) and is connected to it by means of welding, bolted-, riveted connections or in another way.
  • a slotted opening 22, which is open towards the lower edge 23 of the plate 21, is provided on the underside of the plate 21.
  • the ends 4a of the hinge pin 4 can be slid from the underside into the slotted openings 22 of the spring carrier brackets 2 fitted on either side of the vehicle.
  • the ends 4a of the hinge pin are preferably threaded.
  • a bearing bush 24 is fitted over the ends 4a of the hinge pin 4 and clamped against the outside of the plate 21 of the spring carrier bracket 2 by means of a nut 25.
  • the plate 21 can have a flange 26 against which a strut 20 can be fixed.
  • a flanged edge 27 can also be provided on the other side in order to provide the spring carrier bracket 2 with sufficient stiffness.
  • Fig. 1b directly above the axle body an air spring 9, also known as bellows, is fitted on the sleeve 3b.
  • the air spring 9 engages with its upper side on the vehicle chassis.
  • Figs 8 - 11 show a number of alternatives for connecting the air spring 9 to the axle body.
  • Fig. 8 and Fig. 11 show that a radially extending mounting flange 11 is provided, preferably welded, on the outside of the axle body 5.
  • the underside 9a of the air spring 9 is screwed against said flange 11 or fixed to it in another way.
  • the mounting flange 11 can extend radially outwards through openings 19 in the sleeve 3a, as shown in Fig. 2 .
  • Fig. 9 shows a plastic bellows seat 14 moulded on integrally with the sleeve 3b of the trailing arm 3.
  • the underside of the air spring 9 is mounted with bolts or the like against said bellows seat 14.
  • Fig. 10 also shows a bellows seat 15 moulded on integrally with the sleeve 3b of the trailing arm 3, where, next to the air spring 9, a shock absorber mounting part 16 is also connected to said arm.
  • the shock absorber mounting part 16 comprises, for example, a plate 16a, which is fitted between the bellows seat 15 and the underside of the air spring 9.
  • the shock absorber mounting part 16 comprises a set of mounting lugs 17 that are connected to the plate 16a, between which mounting lugs a fixing eye of a shock absorber 18 is placed and hingedly connected.
  • the shock absorber 18 can also be connected to the axle body 5 by means of a set of mounting lugs 12 that are fitted, preferably welded, on the outside of the axle body 5, as shown in Fig. 9 and Fig. 12 .
  • Said mounting lugs 12, like the mounting flange 11, are fitted on the axle body 5 before the axle body 5 is wrapped with plastic.
  • the mounting lugs 12 can extend through an opening in the plastic of the sleeve 3b of the trailing arm 3, but they may, if desired, also be situated in the plastic-free end region 5a of the axle body 5.
  • a supporting part 13 on the front side of the trailing arm, against which supporting part an axle lift actuator 18, in this case, for example, in the form of a bellows, rests, as shown in Fig. 7 and Fig. 9 .
  • the other side of the axle lift actuator 18 preferably rests against a supporting plate 19 fitted against a strut 20 of the wheel axle suspension, as shown in Fig. 6 and Fig. 7 .
  • the supporting part 13 is preferably moulded on as an integral part.
  • Fig. 2 illustrates another preferred embodiment of a wheel axle suspension according to the invention.
  • the trailing arm is indicated by reference numeral 103.
  • the parts corresponding to the parts mentioned in the description above are indicated by the same reference numerals.
  • the wheel axle suspension according to this embodiment has a spring trailing arm 103 in the form of a spring body 103c extending over the greater part of the width of the vehicle.
  • the spring trailing arm 103 is made of a fibre-reinforced plastic.
  • the trailing arm 103 may be manufactured like the trailing arm 3 from e.g. mats of fibre material in which is dispersed plastic resin, which after heating and curing interconnects the fibre material layers in the final shape. It is also conceivable to add resin to the fibre material layers to interconnect them. Also other manufacturing methods, in which the fibre material is put directly around the axle body, are possible within the scope of the invention.
  • the fibre mats preferably comprise short fibres with random fibre orientation. It is also possible to use fibre mats with a certain fibre orientation.
  • the layers of fibre material are wrapped around an axle body 5, in this case a hollow axle body with a circular cross section. Wrapping the fibre material around the axle body 5 provides for a sleeve 103b formed on the rear end of the trailing arm 103 after curing of the accompanying plastic resin, which sleeve surrounds the axle body 5 over the greater part of the axle length. Wheels 6 are fitted on the ends 5a of the axle body 5 that are free of plastic.
  • the plastic of the sleeve 103b is immovably connected to the axle body 5, so that any undesirable rotation of the axle body 5 relative to the sleeve 103b, as a result of, for example, braking moments exerted upon the axle, is prevented.
  • the external surface of the axle body 5 can be roughened before the plastic is wound around it. It is also possible to provide, for example to weld, a locking projection 8 on the external surface of the axle body 5, as shown in Fig. 3 , in order to secure the axle body 5 against rotation in the plastic of the trailing arm 103.
  • Two cylindrical fixing eyes 103a are moulded onto the front side of the trailing arm 103.
  • Said fixing eyes can be formed by winding the fibre material around a pin and letting the accompanying resin cure, after which the pin is removed.
  • the cylindrical members are formed as a solid member at first instance and are provided with a bore after curing of the resin.
  • a resilient bearing bush also known as a silent block, is preferably provided in the cylindrical fixing eyes 103a, as is also the case with conventional steel springs.
  • a recess 106 is preferably provided between the cylindrical members 103a in the body 103c of the spring arm 103, which recess 106 is bounded by an arcuate edge 105, which extends in the plane of the spring body 103c between the cylindrical members 103a.
  • the embodiment of the plate-shaped spring arm 103 shown in Fig. 2 has the advantage that it can be used in undercarriages of vehicles, for example trailers, where a conventional wheel axle suspension with steel spring arms is also used.
  • the undercarriages are manufactured separately from the wheel axle suspensions, and when the undercarriage is being manufactured the spring carrier brackets 102 are fitted on it, so that the undercarriage with the spring carrier bracket 102 can be provided with a protective coating. It is preferable not to fit the spring carrier bracket 102 afterwards, and in particular not to weld the spring carrier bracket 102 on the undercarriage afterwards, because the coating becomes damaged.
  • These spring carrier brackets 102 see Fig.
  • the side plates 102a may be connected by a connecting plate 102b if desired.
  • the side plates 102a are provided with fixing holes 105 for running through a hinge pin 104.
  • the hinge pin 104 in the case illustrated is a hinge bolt.
  • the fixing eye 103a is placed between the side plates 102a of the spring carrier bracket 102, the fixing eye 103a being placed in line with the fixing holes 105 in the side plates.
  • the hinge bolt 104 is then run through them, and the whole unit is clamped by screwing a nut on the hinge bolt 104 and tightening it.
  • the side plates 102 in this case rest against the head ends of the bearing bush (not shown), which is fitted in the fixing eye 103 and projects slightly relative to it.
  • a trailing arm of the type shown in Fig. 2 can also be used to suspend a driving axle from a set of spring carrier brackets 102 for a non-driven axle, as shown in Fig. 12 .
  • This figure shows a spring arm 203 in which the rear end is of a lower width, so that room is provided for the steering stub axle 204 of the driven axle 205.
  • Fixing eyes 203b are provided on the front end at the same track width as the fixing eyes 103b of the embodiment of Fig. 2 .
  • An advantage of the spring arms according to the present invention is that, in combination with the fact that the spring arm extends over the greater part of the width of the vehicle, the material is extremely suitable for relatively free shaping. This makes it possible to adapt the shape to make room for other parts of the wheel axle suspension. For instance, an recess can be provided to make room for a brake cylinder. It is also possible to vary the width of the spring arm, as shown in Fig. 12 , to make room for the steering stub axles 204 of a driven axle 205.
  • the spring arm has a thickness curve in the longitudinal direction.
  • the spring arm has a substantially constant thickness in the longitudinal direction of the vehicle, as is shown in Fig. 4 .
  • the stiffness of the spring trailing arm then varies in the longitudinal direction through the fact that, viewed in the longitudinal direction, the fibre density in the spring arm varies.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)
EP08163393A 2007-08-31 2008-09-01 Radachsaufhängung mit Kunststofffederarm Withdrawn EP2030815A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL1034316A NL1034316C2 (nl) 2007-08-31 2007-08-31 Wielasophanging met kunststof veerarm.

Publications (1)

Publication Number Publication Date
EP2030815A1 true EP2030815A1 (de) 2009-03-04

Family

ID=39232840

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08163393A Withdrawn EP2030815A1 (de) 2007-08-31 2008-09-01 Radachsaufhängung mit Kunststofffederarm

Country Status (2)

Country Link
EP (1) EP2030815A1 (de)
NL (1) NL1034316C2 (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012107272A1 (de) * 2011-02-11 2012-08-16 Zf Friedrichshafen Ag Faserverbund-hybridlenker
DE102011079654A1 (de) * 2011-07-22 2013-01-24 Zf Friedrichshafen Ag Vierpunktlenker
EP2567838A3 (de) * 2011-09-12 2013-06-19 BPW Bergische Achsen KG Nutzfahrzeug-Starrachse
DE102012001671A1 (de) * 2012-01-28 2013-08-01 Volkswagen Aktiengesellschaft Kraftfahrzeughinterachse
DE202016103196U1 (de) 2016-06-02 2016-07-06 Ford Global Technologies, Llc Zweiteilige Radaufhängungseinheit
CN106143033A (zh) * 2015-05-15 2016-11-23 福特全球技术公司 用于机动车辆的悬挂装置
DE102016209689A1 (de) 2016-06-02 2017-12-07 Ford Global Technologies, Llc Zweiteilige Radaufhängungseinheit
DE102016209691A1 (de) 2016-06-02 2017-12-07 Ford Global Technologies, Llc Zweiteilige Radaufhängungseinheit
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DE102017215259A1 (de) 2017-08-31 2019-02-28 Ford Global Technologies, Llc Radaufhängung

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RU2607716C2 (ru) * 2011-07-22 2017-01-10 Цф Фридрихсхафен Аг Четырехточечный рычаг
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WO2013013912A3 (de) * 2011-07-22 2013-03-28 Zf Friedrichshafen Ag Vierpunktlenker
RU2607716C9 (ru) * 2011-07-22 2017-03-27 Цф Фридрихсхафен Аг Четырехточечный рычаг
US9555683B2 (en) 2011-07-22 2017-01-31 Zf Friedrichshafen Ag Four-point link
EP2567838A3 (de) * 2011-09-12 2013-06-19 BPW Bergische Achsen KG Nutzfahrzeug-Starrachse
DE102012001671A1 (de) * 2012-01-28 2013-08-01 Volkswagen Aktiengesellschaft Kraftfahrzeughinterachse
CN106143033A (zh) * 2015-05-15 2016-11-23 福特全球技术公司 用于机动车辆的悬挂装置
DE202016103196U1 (de) 2016-06-02 2016-07-06 Ford Global Technologies, Llc Zweiteilige Radaufhängungseinheit
DE102016209689A1 (de) 2016-06-02 2017-12-07 Ford Global Technologies, Llc Zweiteilige Radaufhängungseinheit
DE102016209691A1 (de) 2016-06-02 2017-12-07 Ford Global Technologies, Llc Zweiteilige Radaufhängungseinheit
DE102016209689B4 (de) 2016-06-02 2024-05-29 Ford Global Technologies, Llc Zweiteilige Radaufhängungseinheit
WO2019036354A1 (en) * 2017-08-14 2019-02-21 Hendrickson Usa, L.L.C. SUSPENSION ASSEMBLY WITH DISC BRAKE ACTUATOR PROTECTION
US10780874B2 (en) 2017-08-14 2020-09-22 Hendrickson Usa, L.L.C. Suspension assembly with disc brake actuator protection
DE102017215259A1 (de) 2017-08-31 2019-02-28 Ford Global Technologies, Llc Radaufhängung
DE102017215259B4 (de) 2017-08-31 2024-05-29 Ford Global Technologies, Llc Radaufhängung

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